prepare release v2.0.15 master branch

Author: gracekarina

README.md

@@ -103,7 +103,7 @@ You can include this library from Sonatype OSS for SNAPSHOTS, or Maven central f
 <dependency>
   <groupId>io.swagger.parser.v3</groupId>
   <artifactId>swagger-parser</artifactId>
-  <version>2.0.14</version>
+  <version>2.0.15</version>
 </dependency>
 ```
 

modules/swagger-parser-core/pom.xml

@@ -3,7 +3,7 @@
     <parent>
         <groupId>io.swagger.parser.v3</groupId>
         <artifactId>swagger-parser-project</artifactId>
-        <version>2.0.15-SNAPSHOT</version>
+        <version>2.0.15</version>
         <relativePath>../..</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>

modules/swagger-parser-v2-converter/pom.xml

@@ -3,7 +3,7 @@
     <parent>
         <groupId>io.swagger.parser.v3</groupId>
         <artifactId>swagger-parser-project</artifactId>
-        <version>2.0.15-SNAPSHOT</version>
+        <version>2.0.15</version>
         <relativePath>../..</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>

modules/swagger-parser-v3/pom.xml

@@ -3,7 +3,7 @@
     <parent>
         <groupId>io.swagger.parser.v3</groupId>
         <artifactId>swagger-parser-project</artifactId>
-        <version>2.0.15-SNAPSHOT</version>
+        <version>2.0.15</version>
         <relativePath>../..</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>

modules/swagger-parser/pom.xml

@@ -3,7 +3,7 @@
     <parent>
         <groupId>io.swagger.parser.v3</groupId>
         <artifactId>swagger-parser-project</artifactId>
-        <version>2.0.15-SNAPSHOT</version>
+        <version>2.0.15</version>
         <relativePath>../..</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>

pom.xml

@@ -8,7 +8,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>io.swagger.parser.v3</groupId>
     <artifactId>swagger-parser-project</artifactId>
-    <version>2.0.15-SNAPSHOT</version>
+    <version>2.0.15</version>
     <packaging>pom</packaging>
     <name>swagger-parser-project</name>
     <developers>
@@ -285,10 +285,10 @@
         </repository>
     </repositories>
     <properties>
-        <swagger-parser-v2-version>1.0.47-SNAPSHOT</swagger-parser-v2-version>
+        <swagger-parser-v2-version>1.0.47</swagger-parser-v2-version>
         <commons-io-version>2.4</commons-io-version>
         <slf4j-version>1.7.28</slf4j-version>
-        <swagger-core-version>2.0.10-SNAPSHOT</swagger-core-version>
+        <swagger-core-version>2.0.10</swagger-core-version>
         <junit-version>4.8.1</junit-version>
         <testng-version>6.14.2</testng-version>
         <jmockit-version>1.35</jmockit-version>